Receptacle-closure.



A. L. WEISSENTHANNER.

RBGEPTAGLB CLOSURE.

APPLICATION FILED JULY 21, 1910.

Patented Jan. 7, 1913.

. To all wl omz't may concern:

' Be it .known that 'I, ALFRED L.

tacle-Closures,

as are ordinarily'used and '-the like; my improvement being espe- ,Inode of sealing is known as the vacuum sealing of the receptacle, but practically the that the trouble arises from the presence in the upper edge of the glass receptacle of m iniite crizzles, which notwithstanding the so construct and-apply the cover that the 40 which a yielding Specification of Patent.

Patented Jan. 7,1913;

WEISSEN- THANNER, a citizenof France andresident of Bayonne, in the county o Hudson and State of New Jersey, have invented certain new and useful Improvements 'in Recepofwhich the-following is a specification.-' i

This invention relates toan improvement in metallic covers for glass receptacles such for preserving jellies,

cially applicable tothat type of cover in packing ringis employed, and atmospheric pressure relied upon to compress such ring against, and hold the cover securelyzin sealing engagement'with, thelupperf edge of the receptacle. This process. In the practice thereof the receptacle ,With the cover" loosely applied thereto is introduced into aclosed chamber; air is then exhausted front the chamber to a vacuum Within the receptacle, and there after air is permitted suddenly to enter the chamber Theoretically by this process the packing ring should effect the reliableseal is defective when the ordinary glass receptacles of commerce are employed. After muchfleiiperimentation I have found pressure'of the packing thereon eventuallypermit the ingress of air to the-receptacle.

My. aim, therefore, is to overcome the serious objectionmenti'oned, and to that end packing thereof is forced tigl'itly against the upper inner edge of the receptaclefand. ona'plane below the -crizzles, as will hereinafter appear/f v In the drawings-I1 gure 1 is a perspective-tiew of my improved metallic cover as; applied to an ordinary glass receptacle. Fig. 2 is a transverse section through one side of,the cover and glass preparatory to; the exhaustidn' of the air from the latter. Fig. 3 is a'similar section after the air has been exhausted and the cover finally shaped. A designates an ordinary glass receptacle, and B the cover applied to the mouth thereof. This cover comprises a metallic disk" having its circumferential portion flanged the roof, 1, the groove This cover is first applied to the receptacle in'the usual manner (as in Fig. 2) and therewith introduced to the vacuum chamber. Immediately after the air has hausted from the latter, the roof 1 and side wall, 2 of the grooved portion of the cover are forced downwardly and outwardly by a suitable mechanical the c and against the opposing surface of the recreate 4eptacle and on a line as at a: below the crizzles in the upper edge of the glass. There is thus the cover a beveled or inclined coated portion which is' maintained in close contact with the-opposing the external pressure, thereby insuring the hermetical Application flied 31115.21; i910. 'f S eria'lNo. 573,086.

and shaped to provide a depending rim 1) andan annular groove or channel 6 adapted respectively to embrace and receive the-u per edge d y .portion 6 within the the receptacle. tion I apply a of the receptacle, the inner or b0 of the. disk being depressed to lie In pursuance of my invenor channel with a thin film.

been exdcvice so as to press nta'ined composition uniformly around produced adjacent the rim of wall of the receptacle by sealing'of the receptacle. I cla1m- The combination wlth a glass receptacle in the upper v ALFRED 1..- wrissru'ralmira. Witnesses: I

R. TIMBROOK Mo'r'r,

JOSEPH SCI-IARFEN BERGER- inner diameter of the mouth of rubber composition 0 within the annular groove or channel of the cover in such manner that the composition coats and the inner sidewall, 2, of-

having a plain open mouth, of acoversealing the same by atmospheric pressure, said cover comprising a thin metallic disk having a. circumferential rim, an annular groove or channel adjacent thereto, and a centrally depressed body portion, the top and inne1 side wall of said groove 01' .channelbeing coated with a thin film of packing composition, and beingrepressed to inclined or beveled form around the inner upper edge of the receptacle after the cap is applied to andnthe air exhausted" from the receptacle, whereby the composition on the inner side wall is forced downwardly and outwardly into close sealing engagement with the opposing inner surface of the receptacle and on a line ,below the 'crizzles' edge of the glass. 

